GRANDES TAXONES DE FITOBENTOS Y SU RELACIÓN CON LA HIDROLOGÍA, FÍSICA Y QUÍMICA DE PEQUEÑOS RÍOS ANDINOS

In 16 sampling points, which were located in 14 streams of the middle and high basin of the Bogotá River (2.617 - 2.988 m), we analyzed some physical, chemical and hydrological variables and the benthic algae community (taxonomic classes). By means of Principal Component Analysis, we concluded that the rivers respond to a basin area gradient and mineralization gradient. The streams are of the acidic order 1-4, and their flow rates are lower than 3.7 m3 s-1. The total nitrogen and total  phosphorus concentrations are lower than 7 mg l-1 and 1.4 mg l-1,  respectively. The benthic community is dominated by diatoms,  cyanobacteria and green algae. The basin area and mineralization gradients determine the dominant and co-dominant benthic algae class per stream.

• Autores: Rivera Rondón, Carlos Alberto; Unidad de Ecología y Sistemática, Departamento de Biología, Facultad de Ciencias. Pontificia Universidad Javeriana, Bogotá; Díaz Quirós, Catherina; Unidad de Ecología y Sistemática, Departamento de Biología, Facultad de Ciencias. Pontificia Universidad Javeriana, Bogotá
• Tipo de recurso: Article of journal
• Fecha de publicación: 2004
• Institución: Pontificia Universidad Javeriana
• Repositorio: Repositorio Universidad Javeriana
• Idioma: eng
• OAI Identifier: oai:repository.javeriana.edu.co:10554/31289
• Acceso en línea: http://revistas.javeriana.edu.co/index.php/scientarium/article/view/5027; http://hdl.handle.net/10554/31289
• Palabra clave: null; benthic algae, mountain streams, principal components analysis. Bogotá Stream.; null
• Rights: openAccess
• License: Atribución-NoComercial-SinDerivadas 4.0 Internacional